<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>188-构造函数和类的基本概念.html</title>
</head>
<body>
	
</body>
<script>
	var arr1 = new Array(1,3,5,6,);
	console.log(arr1.sort(function(n1,n2){return n1-n2}));
	console.log(arr1);
	Math.ceil(1.2);
</script>
</html>